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工業觸摸屏

觸摸屏工作時的反應原理

發布日期:2022-10-09 點擊率:56

    電阻壓力觸摸屏的品牌很多等,但它們的反應原理都一樣,所不同的是它們的制作工藝及基材不同,電阻壓力觸摸屏的屏幕表面有兩層導電層,中間用隔離點隔開,當人體觸摸時,導電層接觸,影響電流的重新分配而產生反應,電阻壓力觸摸屏因其本身特性,定位特別準確,不受工作環境、污穢、塵埃、油漬的影響,任何物品觸摸都能產生反應,基材采用防暴、高透光性鋼化玻璃,完全適合在公眾場所使用,其分辨率為4096×4096,單點觸摸次數高達3000萬次, 滿足特殊軟件環境的使用,電阻壓力觸摸屏觸摸感應靈敏,能在8ms-15ms內作出反應,觸摸力度小于3盎司,控制器提供了RS232接口,可與RS232口鼠標或PS/2鼠標同時使用,節省PC機資源,屏幕本身還具有防輻射、防磁功能,電阻壓力觸摸屏表面怕刀子劃破,使用時應當注意。附圖:


 

   紅外感應觸摸屏:
  采用紅外發射及接受原理制成,受加工工藝及本身反應原理限制,其分辨率低,使用壽命短,但因其采用外掛框架式結構,所以安裝方便,無透光限制。附圖:


 

   電容感應觸摸屏:
  運用電場原理,在玻璃屏幕上有一層導電涂層,當人體觸摸時形成藕合電容而反應,其分辨率為4096×4096,由于表面有涂層,所以它的透光率低并且有反光,電容感應觸摸屏不受污穢、塵埃或油漬的影響,但因其采用電場藕合原理,所以會不同程度的受到周圍環境的影響,同時,電容感應觸摸屏存在嚴重的飄移現象。附圖:


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